Machine for twisting auger-bits



(N6 Model.) 4 Shgets-Sheet 1.

v I W. TUCKER.

MACHINE FOR TWISTING AUGER BITS.

Patented Aug 14,-1888.

N PEI'ERS. Pbolblilhagrnphar. Washington. D C.

(No Model.) 7 4 sheet sheet 2.

- W. TUCKER.

MACHINE FOR TWISTING AUGER BITS.

a N0. 283,304.- Patented Aug.14, 1883.

1 (No Model.) 4 Sheets -Sheet 3 y W. TUCKER.

MACHINE FOR TWISTING AUGER BITS;

No. 283,304. Patented Aug. 14, 1883;

mine sses In yen tor 145) a m Tzrofi'er NY PETERS. pnmumo mr, wnshm m, n. c.

r if UNITED; STATES PATENT OFFICE.

'WILLIAM TUCKER, OF EAST BROOKFIELD, MASSACHUSETTS IV-IACHINE FOR TWISTING AUGERPBITS.

SPECIFICATION forming part of Letters Patent No. 283,304, dated August 14, 1883.

Application filed September 29, 1882. (No model.)

, lowing is a specification.

My invention relates to those machines in which a hollow twisting-shaft is employed.

My improved machine is constructed with a solid or rigid base or bed, which supports in suitable bearings or journal-boxes a main shaft, formed with an axial bore, adapted to receive the blank to be operated upon. The .end of the main shaft is armed with a disk, which covers the bore, except a narrow slot for the passage of the blank. A balancewheel is mounted on the rear portion of the shaft, and is recessed on both sides to receive correspondingly-formed faces of a pair of clutch-disks, one clutch-disk being stationary and the other being adapted to slide onthe' shaft. Mounted infront of the forward end of the main hollow shaft area pair of rotary die-wheels, having their peripheries formed with grooves and recesses adapted to fit the usual twist of the auger or bit passed between them. These die-wheels are caused torotatel relatively to and in conjunction with the main shaft, which does the twisting, these parts be ing connected by gear-wheels and shafting. The die-wheels are mounted in slides, which are caused to approach toward or recede from each other to adjust them to the blank to be supported and drawn between the die-wheels.

In order that the invention may be fully understood, I will proceed to describeit with reference to the accompanying drawings, in

which-+ Figure 1 is a side elevation of my improved a machine. Fig. 2 is a front V ew. Fig. 3 is a top view. Fig. 4 is a horizontal section on,

the line 4 4, Figs. land 2, showing a blank in position, its forward end 7 being shown supported between the die-wheels.

A may represent the base or bed of the ma "chine, having vertical arms a a, whose tops form bearings for a twister-shaft, B, having a bore, b, to receive a blank l, of an anger or auger-bit, and seated on the arms a c, and covin place.-

wheel ,by which the shaft is revolved. This pulley is recessed at c c on each side to form frictional surfaces, on which the frictional projecting faces d d of clutches DD are adapted to bear. One clutch, D, bears by its hub d against the rear arm, a, and the other clutch, D, is provided with an annular groove, d, in

fork f of the short arm f of a lever, F, plays to move the clutch D on the shaft against the pulley andthepulley againstthe clutch D, to connect the, pulley with the shaft by frictional contact with the clutches, which are keyed to the shaft in suitable manner. The lever F is moved to engage the clutch D with the pulley Gby means of a treadle, G, and released by a spring, H, secured to the side of the bed. V i

I is a disk on the forward end of the twistershaft, having a slot, i, through which the blank is projected and passed. The twistershaft is brought to correct position, so that the slot may be vertical by means of a handwheel, E, keyed thereon.

The forward portion of the base or casting A extends laterally, and its front portion, A, is formed with projections J, having grooves stocks or carriages K, each formed with a vertical sleeve, k, in which rotates a shaft, L,

and at bottom with a worm-wheel, Z.

Keyed or otherwise secured to the tops of the vertical shafts L L are a pair of die-wheels. M M, having on their peripheries grooves or of the auger, and having dies or teeth mm formed thereon, with receding edges, similar to worm-wheel teeth, adapted to fit in the grooves between the thread 2 on the auger. Projecting forward onthe front of the stocks or carriages are blocks N, screwthreaded transversely to receive a right or left screwthread, 0, respectively, on'a horizontal shaft, 0, journaled on bearings P, located on each side of the machine, and having secured at one end a lever, 12, or hand-wheel, for turning the shaft 0 to adjust the die-wheels away from or toward eachother.

providedat top witha collar, Z, to support it,

\ ered by cap-plates'a c, which secure the shaft 7 C is alarge pulley or balance its hub di forming collars d", between which the j, in which slide the supporting-blocks k of recesses m m, adapted to fit the spiral thread 2 The means for revolving the die-wheels in unison are as follows: Q is a right and left worm-shaft, having bearings in brackets R R on the bed of the machine, and secured by plates 1* r. Bolted on the end of this shaft is a'bevel-gear wheel, S, meshed by another bevel-gear wheel, T, on the end of a short shaft, U, penetratingand having bearing in the front portion, A, the inner end of this short shaft carrying a gear-wheel, V, meshed by another gear-wheel, WV, on a stud, X. The gear-wheel XV is meshed by another gearwheel, X, whose hub or box Z is keyed to,

' the main shaft 13.

The grooves or recesses in the peripheries of the'die-wheels are formed, if desired, by burning in aheated auger-twist; or'they may be cut as teeth are formed in a gear-wheel of a worm and wheel.

In operation the die-wheels are caused to revolve relatively to and in conjunction with the main shaft, which does the twisting. This relation is sustained by the connections I to the main shaft. The die-wheels are made to impinge on the blank 1 while the twisting is going on, and draws the blankout of the bore in the main shaft as far as the plate is needed, and also prevents any twisting of those parts which have once passedthe dies. All the twisting mustbe done between the diewheels and main shaft having the slotted disk I. The form of the dies of the wheels varies Having thus described my invention, the following is what I claim as new therein and desire to secure by Letters Patent:

1. The combination, with a hollow twistershaft, a pair of die-wheels for supporting and drawing the blank, as set forth.

2. A pair of die-wheels having grooves and teeth adapted to fit the threaded portion of an auger-blank, as set forth.

3. The combination of a twister-shaft, a pair of die-wheels in front of said shaft, and gearing connecting said die-wheelsto the said shaft to adapt them to rotate in unison, as set forth.

4. Carriages or stocks K, each formed with block 70, vertical sleeve k, and projec'tingnutblock N, having a screw-thread to receive the adjusting-screw, as set forth.

'5. The combination of stocks K, each formed with block 70 and sleeve k, and the shafts L, each provided with a die-wheel at one end and a worm-.wheel at the other end, as set forth.

6. Thccombi'nation of a pair of die-wheels,

M M, shafts L L, stocks K K, right-and-leftthreaded shaft 0, and hand-lever p, as set forth.

7. The combination of a pair of die-wheels, M M, shafts L L, provided with worm-wheels Z l, stocks having sleeves k k, right-and-leftworm shaft Q,bevel-gear wheels S T, gearwheels V \V X, and main shaft, as set forth.

, 8. The twister-shaft B, armed with disk I, having slot 2', in combination with a pair of diewheels, M M, as set forth.

9. The pulley 0, having recesses c c,- the clutches D D, having projectingfaces fitting said recesses, and a lever, F, having forks f, engaging with the clutch D, in combination with a twister-shaft, as set forth.

WIL IAM TUCKER.

Witnesses:

GEO. WV. JOHNSON, XV. J. TUCKER. 

